It's the mastodon link in. I'm getting a ton from mastodon and have been trying to get them to switch to nostr
Nice work. I do the same on my personal account. Are you using the Bluesky link in and the Twitter connect also
I just have the mostr relay in my relays. It does the work.
You can connect your Nostr account to a Twitter account to send your notes there using https://connect.nos.social/ And if you use this relay wss://relay.momostr.pink/ and follow the @Bridgy Fed for Bluesky account here it will send all of your notes to Bluesky. I use all of these for Nostr adoption Keep up the great work